WebSite Logo
  • Content
  • Similar Resources
  • Metadata
  • Cite This
  • Log-in
  • Fullscreen
Log-in
Do not have an account? Register Now
Forgot your password? Account recovery
  1. Informatik - Forschung und Entwicklung
  2. Informatik - Forschung und Entwicklung : Volume 20
  3. Informatik - Forschung und Entwicklung : Volume 20, Issue 1-2, October 2005
  4. Hierarchisches gruppenbasiertes Sampling
Loading...

Please wait, while we are loading the content...

Informatik - Forschung und Entwicklung : Volume 32
Informatik - Forschung und Entwicklung : Volume 31
Informatik - Forschung und Entwicklung : Volume 30
Informatik - Forschung und Entwicklung : Volume 29
Informatik - Forschung und Entwicklung : Volume 28
Informatik - Forschung und Entwicklung : Volume 27
Informatik - Forschung und Entwicklung : Volume 26
Informatik - Forschung und Entwicklung : Volume 25
Informatik - Forschung und Entwicklung : Volume 24
Informatik - Forschung und Entwicklung : Volume 23
Informatik - Forschung und Entwicklung : Volume 22
Informatik - Forschung und Entwicklung : Volume 21
Informatik - Forschung und Entwicklung : Volume 20
Informatik - Forschung und Entwicklung : Volume 20, Issue 4, May 2006
Informatik - Forschung und Entwicklung : Volume 20, Issue 3, December 2005
Informatik - Forschung und Entwicklung : Volume 20, Issue 1-2, October 2005
Editorial zum Themenheft: ,,Modellierung“
Modellbasierte Entwicklung eingebetteter Fahrzeugsoftware bei DaimlerChrysler
Achieving high quality of use-case-based requirements
Modellierung und kartographische Visualisierung von Geodaten mit XML-basierten Sprachen
Szenario-basierter Systemtest von Software-Produktfamilien
Hierarchisches gruppenbasiertes Sampling
Aspektorientierte Programmiertechniken im Unit-Testen
Quantifizierung des zu erwartenden Nutzens von Datenbankreorganisationen
Kommunizierende Workflow-Services modellieren und analysieren
Persistent Reusable Java Virtual Machine unter z/OS und Linux
Informatik-Patente
Security, caching, and self-management in distributed information systems
Informatik - Forschung und Entwicklung : Volume 19
Informatik - Forschung und Entwicklung : Volume 18
Informatik - Forschung und Entwicklung : Volume 17
Informatik - Forschung und Entwicklung : Volume 16
Informatik - Forschung und Entwicklung : Volume 15
Informatik - Forschung und Entwicklung : Volume 14
Informatik - Forschung und Entwicklung : Volume 13
Informatik - Forschung und Entwicklung : Volume 12

Similar Documents

...
Sample Footprints für Data-Warehouse-Datenbanken

Article

...
Software-Forum

Article

...
Software-Forum

Article

...
Informatik-Patente

Article

...
Informatik-Patente

Article

...
Informationen / Meinungen

Article

...
Informatik-Patente

Article

...
Informatik-Patente

Article

...
Informationen / Meinungen

Article

Hierarchisches gruppenbasiertes Sampling

Content Provider Springer Nature Link
Author Gemulla, Rainer Berthold, Henrike Lehner, Wolfgang
Copyright Year 2005
Abstract In Zeiten wachsender Datenbankgrößen ist es unumgänglich, Anfragen näherungsweise auszuwerten um schnelle Antworten zu erhalten. Dieser Artikel stellt verschiedene Methoden vor, dieses Ziel zu erreichen, und wendet sich anschließend dem Sampling zu, welches mit Hilfe einer Stichprobe schnell zu adäquaten Ergebnissen führt. Enthalten Datenbankanfragen Verbund- oder Gruppierungsoperationen, so sinkt die Genauigkeit vieler Sampling-Verfahren sehr stark; insbesondere werden vor allem kleine Gruppen nicht erkannt. Dieser Artikel befasst sich mit hierarchischen gruppenbasiertem Sampling, welches Sampling, Gruppierung und Verbundoperationen kombiniert. In times of increasing database sizes it is crucial to process queries approximately in order to obtain answers quickly. This article introduces several methods for achieving this goal and afterwards focuses on sampling, yielding appropriate results by using only a subset of the actual data. If database queries contain join or group-by operations, the accuracy of many sampling methods drops significantly; especially small groups are not recognized. This article is concerned with hierarchical group-based sampling, which combines sampling, grouping and joins.
Starting Page 45
Ending Page 56
Page Count 12
File Format PDF
ISSN 01783564
Journal Informatik - Forschung und Entwicklung
Volume Number 20
Issue Number 1-2
e-ISSN 09492925
Language German
Publisher Springer-Verlag
Publisher Date 2005-03-15
Publisher Place Berlin, Heidelberg
Access Restriction Subscribed
Subject Keyword Database systems Query processing Approximation Sampling Computer Hardware Computer Systems Organization and Communication Networks Software Engineering/Programming and Operating Systems Data Structures, Cryptology and Information Theory Theory of Computation Computer Science
Content Type Text
Resource Type Article
Subject Computer Science
  • About
  • Disclaimer
  • Feedback
  • Sponsor
  • Contact
  • Chat with Us
About National Digital Library of India (NDLI)
NDLI logo

National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.

Learn more about this project from here.

Disclaimer

NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.

Feedback

Sponsor

Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.

Contact National Digital Library of India
Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302
See location in the Map
03222 282435
Mail: support@ndl.gov.in
Sl. Authority Responsibilities Communication Details
1 Ministry of Education (GoI),
Department of Higher Education
Sanctioning Authority https://www.education.gov.in/ict-initiatives
2 Indian Institute of Technology Kharagpur Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project https://www.iitkgp.ac.in
3 National Digital Library of India Office, Indian Institute of Technology Kharagpur The administrative and infrastructural headquarters of the project Dr. B. Sutradhar  bsutra@ndl.gov.in
4 Project PI / Joint PI Principal Investigator and Joint Principal Investigators of the project Dr. B. Sutradhar  bsutra@ndl.gov.in
Prof. Saswat Chakrabarti  will be added soon
5 Website/Portal (Helpdesk) Queries regarding NDLI and its services support@ndl.gov.in
6 Contents and Copyright Issues Queries related to content curation and copyright issues content@ndl.gov.in
7 National Digital Library of India Club (NDLI Club) Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach clubsupport@ndl.gov.in
8 Digital Preservation Centre (DPC) Assistance with digitizing and archiving copyright-free printed books dpc@ndl.gov.in
9 IDR Setup or Support Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops idr@ndl.gov.in
I will try my best to help you...
Cite this Content
Loading...